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Tire TPI Count

Old 06-01-07, 12:18 PM
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kleinboyz
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Tire TPI Count

What is the skinny on TPI for tires? I understand it is the thread count, but what does the higher count do for the ride? Smoother ride? Less chance of flat?

I ride The Michelin Pro Race 120 TPI was thinking of trying some Vittoria OC EVO KS Clinchers 290 TPI

Thanks for the help,

Chad
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Old 06-01-07, 12:27 PM
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awiner
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From Sheldon Brown at http://www.sheldonbrown.com/tires.html :


Some tires use thick thread, some use thin thread for the fabric. With thin thread, there are more threads per inch ("TPI") and this number is often considered an important indication of tire performance. The higher the TPI number, the thinner and more flexible the tire fabric is. Thin-wall (high TPI) tires tend to be lighter and have lower rolling resistance, but they're more easily damaged by road hazards.
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Old 06-01-07, 01:44 PM
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The Evo KSs are smooth as silk. Fast too. I'm not a believer that higher TPI tires are more prone to damage by road hazards. I've put thousands of miles on them without any problems at all with flats and I ride on roads that are less than ideal. I have found them to be much tougher than Conti 4000s or the Conti Attack/Force combo I tried previous to switching to the Vittorias. Just don't expect extremely long life out of them in terms of wear.
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Old 06-01-07, 02:03 PM
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The Vittorias are only slightly faster but their puncture resistance is lower. I raced on both and my Michelins accumulated no cuts while racing the same courses on the Vittorias resulted in several cuts. I don't race on the Vittorias anymore.
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